Ornament connecting structure, vehicle door and vehicle

Abstract

The utility model provides a kind of ornament connecting structure, vehicle door and vehicle, ornament connecting structure, comprising: ornament body, ornament body is made of foamed material;Insert, insert has pre-buried part and connecting portion, at least part of pre-buried part is embedded in ornament body, connecting portion is located ornament body surface side, connecting portion is connected with pre-buried part, and connecting portion is used to connect target piece to be assembled.The distance between connecting portion and pre-buried part is provided with sealing plate, the surface of sealing plate close to connecting portion is substantially flush with the surface of ornament body close to connecting portion, or the distance between the surface of sealing plate close to connecting portion and the end portion of connecting portion away from ornament body is less than the distance between the surface of ornament body close to connecting portion and the end portion of connecting portion away from ornament body.The present application solves the problem that the inner and outer trim structural member made of foamed material cannot be connected to hard point in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of connecting component design technology, specifically to a trim connecting structure, a car door, and a vehicle. Background Technology

[0002] Currently, large exterior structural components for interior and exterior trim are mainly manufactured from materials such as PP and ABS through injection molding. Injection molding typically involves expensive molds and tooling, a long development cycle, and difficulties in controlling the VOCs (volatile organic compounds) odor from injection molding raw materials. Foamed materials introduce air bubbles into the matrix material using physical or chemical methods to form a honeycomb structure, thereby reducing density and improving performance. For example, EPP (expanded polypropylene), as a new type of polyolefin foamed raw material, has good environmental performance, low density, and its molding tooling is much cheaper than injection molds, offering significant advantages as a substitute. However, due to limitations in the material's inherent properties and molding process, it suffers from insufficient structural strength in molded parts and the inability to create hard-point connections. Therefore, its application in the field of interior and exterior structural components is greatly limited.

[0003] There is currently no effective solution to the aforementioned problems in the existing technology. Utility Model Content

[0004] The main purpose of this utility model is to provide a trim connection structure, a car door, and a vehicle to solve the problem that interior and exterior trim structural parts made of foamed materials cannot be connected by hard points in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a decorative element connection structure is provided, comprising: a decorative element body made of foamed material; an insert having a pre-embedded portion and a connecting portion, wherein at least a portion of the pre-embedded portion is embedded in the decorative element body, the connecting portion is located on one side of the surface of the decorative element body, the connecting portion is connected to the pre-embedded portion, and the connecting portion is used to connect a target part to be assembled; a sealing plate is provided between the connecting portion and the pre-embedded portion, wherein the surface of the sealing plate near the connecting portion is substantially flush with the surface of the decorative element body near the connecting portion, or the distance between the surface of the sealing plate near the connecting portion and the end of the connecting portion away from the decorative element body is less than the distance between the surface of the decorative element body near the connecting portion and the end of the connecting portion away from the decorative element body.

[0006] The embodiments of this application achieve the following technical effects: by connecting the insert to the body of the decorative component made of foam material, and providing a sealing plate between the connecting part and the embedded part, and wherein the surface of the sealing plate near the connecting part is substantially flush with the surface of the decorative component body near the connecting part, or the surface of the sealing plate near the connecting part extends beyond the surface of the decorative component body near the connecting part, it is possible to prevent the foam material from intruding into the insert snap-fit ​​area, thereby improving the matching and connection strength of the snap-fit ​​area. The technical solution of this application effectively solves the problem in the prior art that internal and external decorative structural components made of foam material cannot be rigidly connected.

[0007] Furthermore, the distance between the surface of the sealing plate near the connecting part and the end of the connecting part away from the body of the ornament is less than the distance between the surface of the ornament body near the connecting part and the end of the connecting part away from the body of the ornament, which is 0-2mm.

[0008] Furthermore, a foam material filling cavity is formed inside the embedded part. The foam material filling cavity has a filling port, through which the foam material flows into the foam material filling cavity so that the insert is connected to the body of the ornament.

[0009] Furthermore, there are multiple filling ports, and the orientation of the multiple filling ports is set differently.

[0010] Furthermore, the orientation of at least two filling ports is perpendicular to each other.

[0011] Furthermore, the embedded part has reinforcing ribs, at least part of which are located within the foam material filling cavity, and the reinforcing ribs divide the foam material filling cavity into at least two sub-cavities.

[0012] Further, the reinforcing rib includes: a first reinforcing rib extending along a first direction, the first reinforcing rib dividing the foam material filling cavity into at least two first cavities along a second direction; and a second reinforcing rib connected to the first reinforcing rib, the second reinforcing rib extending along a second direction, the first reinforcing rib dividing the foam material filling cavity into at least two second cavities along the first direction, each second cavity having a filling port at its end.

[0013] Furthermore, the embedded part and the connecting part are integrally formed, and the connecting part is a snap-fit ​​groove.

[0014] Furthermore, the snap-fit ​​slot includes a first snap-fit ​​block and a second snap-fit ​​block, both of which are connected to the sealing plate.

[0015] Furthermore, the embedded part includes a filling cavity wall, which is connected to the sealing plate to form a foam material filling cavity. The foam material filling cavity has a filling port, which includes a first filling port and a second filling port. The orientation of the first filling port is perpendicular to the installation direction of the snap-fit ​​groove, and the orientation of the second filling port is perpendicular to the installation direction of the snap-fit ​​groove.

[0016] Furthermore, the embedded part and the connecting part are separately provided. The end of the embedded part is provided with a mounting cavity. The mounting cavity protrudes from the body of the ornament. The protruding part of the embedded part has a mounting cavity. The connecting part is located in the mounting cavity. The connecting part is a snap fastener. The connecting part is connected to the embedded part through the mounting cavity.

[0017] Furthermore, the mounting cavity includes a mounting cavity wall, which is connected to the sealing plate.

[0018] Furthermore, the embedded part includes a filling cavity wall, which is connected to the sealing plate to form a foam material filling cavity. The foam material filling cavity has a filling port, which includes a third filling port and a fourth filling port. The orientation of the third filling port is parallel to the installation direction of the buckle, and the orientation of the fourth filling port is perpendicular to the installation direction of the buckle.

[0019] Furthermore, a flange face is provided at the end of the embedded part away from the connection part, and the maximum outer diameter of the flange face is greater than the maximum outer diameter of the rest of the embedded part.

[0020] Furthermore, the insert is made of polyolefin material.

[0021] Furthermore, the height of the insert is J, and the depth of the embedded part into the body of the ornament is H, where H≥2 / 3*J.

[0022] Furthermore, the distance between the bottom surface of the embedded part of the ornament body and the surface of the ornament body away from the insert is I, where I ≥ 8 mm.

[0023] According to one aspect of the present invention, a car door is provided, the car door including a trim connection structure, the trim connection structure being the trim connection structure described above.

[0024] According to one aspect of the present invention, a vehicle is provided, the vehicle including a trim connection structure or a door, wherein the trim connection structure is the aforementioned trim connection structure, and the door is the aforementioned door. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic diagram of the first embodiment of the decorative component connection structure according to the present invention is shown;

[0027] Figure 2 A schematic diagram of a second embodiment of the decorative component connection structure according to the present invention is shown;

[0028] Figure 3A schematic diagram of a third embodiment of the decorative component connection structure according to the present invention is shown;

[0029] Figure 4 A schematic diagram of a fourth embodiment of the decorative component connection structure according to the present invention is shown;

[0030] Figure 5 A schematic diagram of the fifth embodiment of the decorative component connection structure according to the present invention is shown;

[0031] Figure 6 A schematic diagram of the sixth embodiment of the decorative component connection structure according to the present invention is shown;

[0032] Figure 7 A schematic diagram of the seventh embodiment of the decorative component connection structure according to the present invention is shown.

[0033] The above figures include the following reference numerals:

[0034] 1. The main body of the ornament;

[0035] 2. Insert; 21. Embedded part; 211. Foam material filling cavity; 212. Filling port; 2121. First filling port; 2122. Second filling port; 2123. Third filling port; 2124. Fourth filling port; 213. Reinforcing rib; 2131. First reinforcing rib; 2132. Second reinforcing rib; 214. Filling cavity wall; 215. Second cavity; 216. Flange face; 217. Mounting cavity; 2171. Mounting cavity wall; 22. Connecting part; 221. Snap-fit ​​groove; 2211. First snap-fit ​​block; 2212. Second snap-fit ​​block; 222. Snap-fit; 23. Sealing plate; 3. Target part to be assembled; 32. Sheet metal; 33. Skin; 34. Particle filling path. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0040] Currently, large exterior structural components, both interior and exterior, are mainly manufactured using injection molding processes from materials such as PP (polypropylene) and ABS (acrylonitrile-butadiene-styrene copolymer, commonly known as ABS resin). Injection molding typically involves high mold and tooling costs, long development cycles, and difficulties in controlling the VOCs (volatile organic compounds) odor from injection molding raw materials. Especially for smaller vehicle models, the hundreds of thousands or even millions of dollars spent on mold and tooling can severely impact the profitability of a development project. Even if mold costs are amortized, it still leads to a significant increase in unit costs, reducing the product's market competitiveness.

[0041] EPP material, as a new type of polyolefin foam raw material, has good environmental performance and low density. Furthermore, EPP molding tooling is much cheaper than injection molds, giving it a significant advantage as a substitute. Currently, EPP is only used in a few parts with simple, flat structures, such as spare tire covers and sun visor frames. There are no mature solutions or applications for complex interior and exterior structural parts. This is due to two reasons: first, EPP material itself is a foam material, and its structural strength is weaker than injection molded parts; moreover, the structural strength decreases further with increasing foaming ratio. Second, the EPP molding process has significant limitations on product wall thickness, requiring at least ≥8mm, far exceeding the 1.5-3mm wall thickness of conventional injection molding. Therefore, it is almost impossible to mold some connecting components with high strength requirements and intricate structures.

[0042] Currently, there are two main molding processes for large exterior structural components, both interior and exterior:

[0043] The first method is injection molding. The skeleton is made from materials such as PP and ABS using injection molding. The skeleton is directly textured as an exterior part or covered with a skin to serve as the exterior part. It is suitable for various shapes. Mounting hard points include doghouse clip bases, snaps, welded pillar structures, and snap-fit ​​structures. The doghouse clip base refers to the clip seat or clip mounting pillar, generally a one-piece cylindrical or square pillar structure injection molded onto the back of the product (not the exterior surface). Its main function is to provide a precise and secure mounting base for the clip. The clips are used with an interference fit. Inserted or pressed into the holes of the "doghouse"; a snap refers to a fastener or snap-on fastener, generally in the form of a standard, usually plastic, fastener designed with one or more flexible barbs or claws. Its function is to achieve quick connection and fixation by inserting into matching mounting holes or rails, utilizing elastic deformation; a "click" indicates that it is in place. All components are integrally injection molded with the main body structure; injection molding processes typically involve high mold and tooling costs, long development cycles, and difficulties in controlling the VOCs odor of injection molding raw materials. Lightweight solutions in injection molding face technical bottlenecks, generally achieving a maximum weight reduction of only 15%, such as thin-wall injection molding or chemical microfoaming injection molding. Further increasing the weight reduction ratio will lead to a serious decline in product performance, failing to meet product standard requirements.

[0044] The second method is molding. This involves molding a skeleton from PET+glass fiber, wood fiber, or hemp fiber sheets. The skeleton's appearance can be enhanced by covering the outer skin, improving its luxurious look. This method is suitable for simpler shapes. Molding structures typically cannot integrally mold the back reinforcement or connecting points. These can be achieved through secondary injection molding, directly injecting the back reinforcement or connecting points onto the back of the molded part. Alternatively, the connecting structure can be pre-molded separately and then bonded to the back of the molded part using hot melt adhesive. Molding is best suited for parts with flat surfaces and few design features. It is less suitable for complex shapes, limiting its application. Secondary injection molding of the back structure or connecting points often results in weak connections. Since the back structure and the molding material are different, there is a risk of detachment and failure. Furthermore, secondary injection molding requires specialized equipment and involves significant investment. Hot melt adhesive bonding also affects strength and requires additional positioning fixtures, leading to poor assembly accuracy.

[0045] In summary, existing exterior trim components, especially large exterior structural components, cannot meet all the needs. There is an urgent need for a new type of trim component connection structure that can expand its application range while taking into account both cost and performance.

[0046] Combination Figures 1 to 7 As shown, according to a specific embodiment of this application, a decorative element connection structure is provided.

[0047] The decorative component connection structure includes: a decorative component body 1 and an insert 2. The decorative component body 1 is made of foamed material. The insert 2 has a pre-embedded portion 21 and a connecting portion 22, with at least a portion of the pre-embedded portion 21 embedded within the decorative component body 1. The connecting portion 22 is located on one side of the surface of the decorative component body 1. The connecting portion 22 is connected to the pre-embedded portion 21. The connecting portion 22 is used to connect the target component 3 to be assembled. A sealing plate 23 is provided between the connecting portion 22 and the pre-embedded portion 21. The surface of the sealing plate 23 near the connecting portion 22 is substantially flush with the surface of the decorative component body 1 near the connecting portion 22, or the distance between the surface of the sealing plate 23 near the connecting portion 22 and the end of the connecting portion 22 away from the decorative component body 1 is less than the distance between the surface of the decorative component body 1 near the connecting portion 22 and the end of the connecting portion 22 away from the decorative component body 1.

[0048] By applying the technical solution of this utility model, the insert 2 is connected to the decorative body 1 made of foamed material, and a sealing plate 23 is provided between the connecting part 22 and the pre-embedded part 21. The surface of the sealing plate 23 near the connecting part 22 is basically flush with the surface of the decorative body 1 near the connecting part 22, or the surface of the sealing plate 23 near the connecting part 22 extends beyond the surface of the decorative body 1 near the connecting part 22. This prevents the foamed material from intruding into the insert snap-fit ​​area, thereby improving the matching and connection strength of the snap-fit ​​area. The technical solution of this application effectively solves the problem in the prior art that interior and exterior decorative structural parts made of foamed material cannot be connected by hard points. At the same time, it also leverages the advantages of the decorative body 1 made of foamed material, such as low mold cost and low density, greatly expanding the application field of foamed material in complex interior and exterior decorative structural parts.

[0049] Preferably, the foaming material is EPP (expanded polypropylene). EPP is a type of foamed material, and its structural strength is weaker than that of injection-molded parts. Furthermore, the structural strength decreases further with increasing foaming ratio. The EPP molding process also imposes significant limitations on product wall thickness, requiring at least ≥8mm, far exceeding the 1.5-3mm wall thickness of conventional injection molding. Therefore, it is almost impossible to mold connecting components with high strength requirements and intricate structures. Common connecting components include doghouse snap-on bases, snaps, welded pillar structures, and snap-fit ​​structures. These connecting structures are essential for effectively connecting different parts of an assembly or connecting the parts assembly to a sheet metal assembly. The inherent limitations of EPP foam material undoubtedly restrict its application in interior and exterior trim. By using EPP material to make the body of the decorative part 1, and using an insert 2 with a pre-embedded part 21 and a connecting part 22 to connect the target part 3, a hard-point connection of the decorative part based on EPP material is realized. This can make up for the problem that EPP material itself is not strong enough to make hard-point connections. This solution can effectively solve the problem that EPP material cannot make hard-point connections and greatly expand the application field of EPP material in complex interior and exterior decorative structural parts.

[0050] Conventional interior and exterior trims are mainly made of materials such as PP and ABS through injection molding. EPP (expanded polypropylene), as a novel polyolefin foam raw material, is environmentally friendly and has low density, offering excellent lightweight properties. Furthermore, its mold and tooling costs are only about 1 / 5 of those for injection molding, making it a promising candidate for wide-ranging applications in the interior and exterior trim industry. The technical solution of this application provides a connection scheme based on a foamed material (e.g., EPP) as the main material combined with an insert structure, which can overcome the problems of insufficient structural strength and inability to perform hard-point connections inherent in EPP material.

[0051] Foamed materials are a class of materials in which a large amount of gas is introduced into a polymer through physical or chemical methods to form a porous structure. The foaming process can significantly reduce the density of the material while endowing it with excellent sound insulation, heat insulation, cushioning, and shock absorption properties.

[0052] EPP (Expanded Polypropylene) is a high-performance foamed material. Compared to other foamed materials, EPP has the following characteristics: Due to its porous structure, EPP has a very low density, meaning it is also very lightweight, making it ideal for products requiring lightweight construction. EPP can absorb a large amount of energy upon impact, making it an ideal cushioning material, particularly suitable for industries such as automotive, sporting goods, and packaging. EPP can return to its original shape after being compressed, demonstrating its good elasticity and durability, maintaining its functional properties even after repeated use. EPP can be processed into complex shapes using various processes such as vapor molding, making it suitable for manufacturing a variety of customized parts.

[0053] The technical solution of this application overcomes the problem of insufficient structural strength of EPP material itself, enabling it to achieve hard-point connections in interior trim parts; it expands the application range of EPP material in complex interior and exterior trim structures, and improves the production efficiency and cost-effectiveness of parts; compared with the adhesive-backed insert connection solution, the technical solution of this application improves installation strength, reliability and product precision, while significantly reducing mold and tooling costs and enhancing the market competitiveness of the product.

[0054] Furthermore, the distance between the surface of the sealing plate 23 near the connecting portion 22 and the end of the connecting portion 22 away from the main body 1 is less than the distance between the surface of the main body 1 near the connecting portion 22 and the end of the connecting portion 22 away from the main body 1, which is 0-2mm. By setting the distance between the surface of the sealing plate 23 near the connecting portion 22 and the surface of the main body 1 near the connecting portion 22 to be 0-2mm, it is possible to both prevent the sealing plate 23 from intruding into the connecting portion 22 and ensure the strength of the embedded portion 21 within the main body 1.

[0055] Furthermore, a foam material filling cavity 211 is formed inside the embedded part 21. The foam material filling cavity 211 has a filling port 212. The foam material flows into the foam material filling cavity 211 through the filling port 212 so that the insert 2 is connected to the decorative body 1.

[0056] The foamed material can fill the cavity of the embedded area of ​​the insert. Through processes such as steam heating, the foamed material and the insert can form a tight contact and bond. In this way, when the body of the ornament is formed, the foamed material expands in the cavity and adheres directly to the insert, which significantly enhances the interfacial bonding force between the insert and the body of the ornament, and improves the mechanical strength and stability of the overall connection.

[0057] By designing the foam-filled cavities, the foam material can be used selectively in areas requiring high structural strength, such as around connectors. The foam material is not only lightweight but also has high energy absorption capacity, which helps improve the safety and durability of components under impact or pressure.

[0058] Foamed materials such as EPP are generally less expensive than traditional injection molding materials, and mold costs are also more economical. By designing foamed material filling cavities, the structural performance of trim pieces can be improved without significantly increasing material consumption, thereby optimizing overall cost-effectiveness. Foamed materials have excellent molding adaptability; even with complex shapes or curved surfaces in the trim piece body, the foamed material can enter through the filling port and evenly fill the foamed material filling cavity. This helps to firmly embed the insert into the trim piece body, maintaining good adhesion even in areas of stress concentration. The insertion and trim piece body can be bonded in a single molding process, avoiding additional secondary operations or assembly steps, thus improving production efficiency and shortening the production cycle.

[0059] Among interior and exterior trim, the door trim assembly is a crucial component. This assembly requires the installation of target parts, and different target parts utilize different insert structures, such as water-cutting snap-fit ​​inserts (with structural forms like...). Figures 1 to 4 (as shown) and doghouse buckle base (structural form as shown) Figures 5 to 7 (As shown). Target part 3 includes water-cut parts, sheet metal parts, etc. Figure 1 The diagram shows the target part 3 to be assembled, sheet metal 32, and skin 33.

[0060] Furthermore, there are multiple filling ports 212, and the orientation of the multiple filling ports 212 is set differently.

[0061] Different filling ports can guide the foam material into the filling cavity from multiple directions, which helps to promote a more uniform distribution and filling of the foam material. This can reduce defects caused by local underfilling or overfilling, and improve the overall consistency and quality of the finished product.

[0062] The presence of multiple filling ports allows for simultaneous injection of foaming material at multiple points, theoretically accelerating the filling speed and shortening the molding time. This is highly advantageous for improving production efficiency, especially in large-scale production environments.

[0063] Foamed materials have limited fluidity under high temperature and pressure conditions; different orientations of the filling orifice can improve this fluidity. Even in complex structures or deep cavities, this ensures the foamed material reaches its destination smoothly, reducing the formation of air bubbles or voids and improving the mechanical properties and durability of the parts. Through different filling orifices, the foamed material can more comprehensively encapsulate the insert, increasing the contact area between the insert and the foamed material, thereby improving the clamping force and interfacial bonding strength. Under external loads, the connection structure will exhibit greater stability and less tendency to separate. Uniform filling helps reduce residual stress generated during the cooling and solidification process. These stresses can lead to part deformation or cracking, while filling in multiple directions helps balance stress distribution and improve the geometric stability of the finished product.

[0064] Preferably, at least two filling ports 212 are oriented perpendicularly to each other. By having the filling ports 212 oriented perpendicularly to each other, the flowability of the foamed material under high temperature and high pressure conditions can be further improved.

[0065] Furthermore, the embedded part 21 has reinforcing ribs 213, at least a portion of which are located within the foam material filling cavity 211, and the reinforcing ribs 213 divide the foam material filling cavity 211 into at least two sub-cavities.

[0066] The function of the reinforcing ribs 213 is to improve the structural rigidity and strength of the embedded part. They can significantly reduce the deformation of the parts under load, especially when the reinforcing ribs 213 are set in the foam material filling cavity, they can better disperse stress and prevent structural failure caused by local stress concentration.

[0067] By dividing the filling cavity into multiple sub-cavities using reinforcing ribs 213, the distribution of foam material within the cavities can be controlled, preventing excessive concentration or uneven distribution of material. This helps ensure that each sub-cavity is filled with sufficient foam material, thereby improving the overall uniformity and consistency of the part.

[0068] The presence of reinforcing rib 213 increases the contact area between the foam material and the insert, thereby improving the bonding strength between the foam material and the insert. The foam material tightly wraps around the reinforcing rib 213, making the connection between the embedded part and the body of the trim more secure.

[0069] During the foaming process, the reinforcing ribs 213 help guide material flow and reduce bubble formation caused by improper material flow. Reduced bubbles contribute to improved surface quality and internal structural integrity of the parts.

[0070] Further, the reinforcing rib 213 includes: a first reinforcing rib 2131 and a second reinforcing rib 2132. The first reinforcing rib 2131 extends along a first direction and divides the foam material filling cavity 211 into at least two first cavities along a second direction; the second reinforcing rib 2132 is connected to the first reinforcing rib 2131 and extends along the second direction, and the first reinforcing rib 2131 divides the foam material filling cavity 211 into at least two second cavities 215 along the first direction, and each second cavity 215 has a filling port 212 at its end.

[0071] The intersecting arrangement of the first reinforcing rib 2131 and the second reinforcing rib 2132 forms a grid-like support structure, which greatly enhances the structural rigidity and stability of the embedded part. This structure can effectively resist the action of external forces and prevent structural deformation or damage caused by load.

[0072] The filling cavity is divided into multiple sub-cavities (first cavity and second cavity) by reinforcing ribs 213. When filling, the foaming material needs to pass through the gaps between these reinforcing ribs 213, which forces the material to be distributed more evenly in each cavity, avoiding material accumulation or cavity phenomenon, and improving the quality and performance of the product.

[0073] Each second cavity has a filling port at its end, meaning that foam material can be injected simultaneously or sequentially from multiple points. This not only accelerates the filling process but also provides finer material flow and filling control, ensuring that each small cavity is fully and uniformly filled. The reinforcing ribs 213 and their separating cavities increase the contact area between the foam material and the embedded part. During the curing process, the foam material more tightly wraps around these reinforcing ribs 213, significantly enhancing the interfacial bonding strength between the foam material and the embedded part, thus improving the overall connection reliability.

[0074] Furthermore, insert 2 is made of polyolefin material using an injection molding process. Insert 2 can also be made of plastic.

[0075] Polyolefin materials and EPP (expanded polypropylene) belong to the same polyolefin family, meaning they share molecular similarities and offer good interfacial compatibility. When inserts are thermally fused with the EPP body, this compatibility ensures a strong bond between the insert and the body material, improving the stability and reliability of the connection. Polyolefin materials are relatively inexpensive, and the injection molding process is highly automated, allowing for fast production and large-scale manufacturing, thus reducing unit costs.

[0076] Furthermore, the height of the insert 2 is J, and the depth of the embedded part 21 embedded in the body 1 of the ornament is H, where H≥2 / 3*J.

[0077] During the process of embedding the pre-embedded part into the body of the trim piece, ensuring that the embedding depth H of the pre-embedded part is at least two-thirds of the height J of the trim piece (H≥2 / 3*J) brings significant benefits in improving the reliability, durability and assembly quality of the connection structure.

[0078] A deeper embedding depth means greater clamping force between the expanded polystyrene (EPP) material and the insert (usually PP material). This depth of embedding ensures a tighter and more secure physical contact between the two, improving the mechanical strength of the connection and maintaining its integrity and stability even under high-intensity external forces.

[0079] Increasing the embedment depth helps optimize stress distribution. When external forces are applied to the connection structure, the stress will be more evenly distributed throughout the embedded part rather than just concentrated near the connection. This helps reduce the occurrence of stress concentration points and improves the overall structural toughness.

[0080] Furthermore, the distance between the bottom surface of the embedded part 21 that is embedded in the body 1 and the surface of the body 1 away from the insert 2 is I, where I ≥ 8 mm.

[0081] The connecting structure of the decorative parts includes various forms. This application specifically describes the embodiments of the water-cut snap-fit ​​insert structure and the doghouse buckle base insert.

[0082] [Example 1]: The decorative component connection structure provided in this application includes an upper water-cutting snap-fit ​​insert structure. In this embodiment, as follows: Figures 1 to 4 As shown, the embedded part 21 and the connecting part 22 are integrally formed, and the connecting part 22 is a snap-fit ​​groove 221. The snap-fit ​​groove 221 is used to snap with the water cutter. The integrally formed design of the embedded part 21 and the connecting part 22 eliminates the interface between the embedded part and the connecting part, avoids possible weak connection areas, and makes the insert and the body of the ornament form a continuous integral structure, which significantly enhances the stability and reliability of the connection.

[0083] Furthermore, the snap-fit ​​groove 221 includes a first snap-fit ​​block 2211 and a second snap-fit ​​block 2212, both of which are connected to the sealing plate 23. The snap-fit ​​groove 221 is formed by the first snap-fit ​​block 2211 and the second snap-fit ​​block 2212 for snap-fitting with the water cutter. The sealing plate 23, connected to the first snap-fit ​​block 2211 and the second snap-fit ​​block 2212, provides a blocking surface for the first snap-fit ​​block 2211 and the second snap-fit ​​block 2212 to block EPP material.

[0084] Furthermore, the embedded part 21 includes a filling cavity wall 214, which is connected to the sealing plate 23 to form a foam material filling cavity 211; the filling port 212 includes a first filling port 2121 and a second filling port 2122. The orientation of the first filling port 2121 is perpendicular to the installation direction of the snap-fit ​​groove 221, and the orientation of the second filling port 2122 is perpendicular to the installation direction of the snap-fit ​​groove 221. Specifically, the orientation of the first filling port 2121 is the vertical direction of the vehicle, which can be either upward or downward; the orientation of the second filling port 2122 is the longitudinal direction of the vehicle, which can be either forward or backward. By setting the orientation of the first filling port 2121 to be perpendicular to the installation direction of the snap-fit ​​groove 221, and the orientation of the second filling port 2122 to be perpendicular to the installation direction of the snap-fit ​​groove 221, foam material can be guided into the filling cavity from multiple directions, which helps to promote a more uniform distribution and filling of the foam material. This can reduce defects caused by insufficient or excessive filling in certain areas and improve the overall consistency and quality of the finished product.

[0085] The main body of the decorative component is manufactured using EPP material through integrated steam forming. For structural components with complex shapes, there are usually certain requirements for the properties of the EPP raw material, with a recommended density of 180-360 kg / m³. 3 The elastic modulus is greater than 140 mPa, the compression modulus is greater than 56 mPa, and the foaming ratio is between 5 and 10 times. If the foaming ratio is too high, the rigidity and strength of the material will decrease significantly, failing to meet the product performance requirements. The minimum design wall thickness c of the EPP body is ≥8 mm. In areas where high rigidity and strength are required, a higher wall thickness can be designed to meet the relevant requirements.

[0086] The outer skin 33 (with a back bubble) is used to cover the surface of the main body 1 of the ornament to improve the appearance. The back of the outer skin can be covered with PU back bubbles of different thicknesses such as 1mm, 2mm, 3mm, 4mm, and 5mm. The entire outer skin is glued to the surface of the EPP material. It can be achieved by manual wrapping, hot pressing, etc. The glue can be hot melt glue, water-based glue, or solvent glue.

[0087] The water-cutting snap-fit ​​insert consists of two parts: the insert snap-fit ​​area (i.e., the connecting part 22) and the insert pre-embedded area (i.e., the pre-embedded part 21). These two parts are integrally molded using an injection molding process. The insert typically uses a PP-based substrate, including PP+EPDM-T10 / 20, PP+LGF10 / 15 / 20, PP+GF10 / 15 / 20, etc. PP materials and EPP both belong to polyolefin materials, and they maintain good interfacial compatibility and adhesion.

[0088] Combination Figures 1 to 4As shown, during the molding process of the trim body, the insert 2 is pre-embedded into the EPP molding mold and molded together. The insert snap-fit ​​area (i.e., the connecting part 22) needs to be embedded in the EPP mold steel, without any EPP material filling it, and it needs to exceed a certain structural depth 'a' value to prevent EPP material from intruding into the insert snap-fit ​​area.

[0089] The width and length of the foam material filling cavity 211 of insert 2 need to meet the requirements of b and c values. Two or more EPP material filling cavities can be arranged side-by-side, with reinforcing ribs 213 added in between to ensure the strength of the insert structure itself, while also increasing the sufficient interface area between the EPP material and the plastic insert to improve the clamping force between them. During EPP mold forming, the filling path of the EPP material can follow... Figure 4 The particle filling path 34 shown here fills the cavity of the insert structure from both sides with the filling vapor.

[0090] The minimum distance between the embedded structure and the EPP surface meets the d-value requirement to ensure that the EPP can be completely filled during molding and filling without material shortage. The thickness of the plastic insert usually meets the thickness requirements of the injection molded part, and the e-value is recommended. The maximum thickness of the EPP material in the embedded area (i.e., the embedded part 21) can usually be made as large as possible, and the f-value is recommended to improve the interlocking strength of the insert structure in the EPP. a is the minimum distance between the surface of the insert structure embedded in the EPP mold and the EPP surface, preferably 0-2mm; b is the width of the EPP filling chamber of the insert structure, preferably ≥8mm; c is the length of the EPP filling chamber (foam material filling chamber 211) of the insert structure, preferably ≥15mm; d is the minimum distance between the insert pre-embedded structure (i.e., the pre-embedded part 21) and the EPP surface, preferably d≥8mm; e is the material thickness of the insert pre-embedded structure, preferably 1.0-3.5mm; f is the maximum structural thickness of the EPP material in the insert pre-embedded area, preferably 35-50mm; the connecting part is used to provide a matching connection point for the EPP assembly parts.

[0091] [Example 2]: The accessory connection structure provided in this application includes a doghouse buckle base insert. In this embodiment, as shown... Figures 5 to 7 As shown, the pre-embedded part 21 and the connecting part 22 are separately provided. The end of part of the pre-embedded part 21 is provided with a mounting cavity 217. The mounting cavity 217 protrudes from the body of the decorative piece 1. Part of the connecting part 22 is located in the mounting cavity 217. The connecting part 22 is a snap-fit. The connecting part 22 is connected to the pre-embedded part 21 through the mounting cavity 217.

[0092] By providing a mounting cavity protruding from the embedded part, a more stable anchoring position can be provided for the snap-fit. This design allows the snap-fit ​​to penetrate deeply into the mounting cavity, forming a stronger mechanical locking effect, improving the tensile strength and stability of the connection, especially performing excellently under large external forces or vibrations. The separate connecting part (snap-fit) mates with the mounting cavity of the embedded part, enabling precise positioning and rapid assembly. The shape and size design of the mounting cavity can perfectly match the connecting part, reducing assembly difficulty, reducing the skill requirements of assembly personnel, and improving production line efficiency.

[0093] Furthermore, the mounting cavity 217 includes a mounting cavity wall 2171, which is connected to the sealing plate 23. Specifically, the mounting cavity wall 2171 has a columnar structure, and the sealing plate 23 is connected to the lower end of the mounting cavity wall 2171, which can provide a blocking surface for the mounting cavity 217 to block the EPP material, so that the mounting cavity 217 has space to install the buckle.

[0094] Furthermore, the embedded part 21 includes a filling cavity wall 214, which is connected to the sealing plate 23 to form a foam material filling cavity 211; the filling port 212 includes a third filling port 2123 and a fourth filling port 2124, the orientation of the third filling port 2123 is parallel to the installation direction of the buckle 222, and the orientation of the fourth filling port 2124 is perpendicular to the installation direction of the buckle 222.

[0095] Specifically, the third filling port 2123 is oriented towards the left and right of the vehicle, and can be set to either left or right depending on the surrounding installation conditions; the fourth filling port 2124 is oriented towards the front and rear of the vehicle, and can be set to either forward or backward depending on the surrounding installation conditions. By setting the orientation of the third filling port 2123 parallel to the installation direction of the clip 222, and the orientation of the fourth filling port 2124 perpendicular to the installation direction of the clip 222, foam material can be guided into the filling cavity from multiple directions, which helps to promote a more uniform distribution and filling of the foam material. This can reduce defects caused by insufficient or excessive filling in certain areas, and improve the overall consistency and quality of the finished product.

[0096] Furthermore, a flange face 216 is provided at the end of the embedded part 21 away from the connecting part 22, and the maximum outer diameter of the flange face 216 is greater than the maximum outer diameter of the rest of the embedded part 21.

[0097] The larger contact area between the flange face and the trim body increases the contact area between the expanded polypropylene (EPP) foam and the plastic insert (usually PP), thereby enhancing the interfacial adhesion. A stronger interfacial bond means a more reliable connection between the embedded part and the trim body, reducing the likelihood of detachment or failure during use.

[0098] The flange face can serve as a guide and positioning reference during the assembly process. When embedding the pre-embedded part into the trim body, the flange face ensures the insert is correctly positioned in the preset location, reducing assembly errors and improving assembly quality and efficiency.

[0099] The main body of the decorative component is manufactured using EPP material through integrated steam forming. For components with complex shapes and structures, there are usually certain requirements for the properties of the EPP raw material, with a recommended density of 180-360 kg / m³. 3 The elastic modulus is greater than 140 mPa, the compression modulus is greater than 56 mPa, and the foaming ratio is between 5 and 10 times. If the foaming ratio is too high, the rigidity and strength of the material will decrease significantly, failing to meet the product performance requirements. The minimum design wall thickness c of the EPP body is ≥8 mm. In areas where high rigidity and strength are required, a higher wall thickness can be designed to meet the relevant requirements.

[0100] "Doghouse" clip-on bases are a common connection mechanism primarily used to secure trim pieces or other components to the vehicle body, especially between interior trim panels and body panels. The term "doghouse" comes from its shape; some designs resemble the outline of a doghouse and feature a protruding structure for mounting the clips. This structure is usually recessed so that the clips can be firmly inserted and locked in place, ensuring a secure installation of the component.

[0101] Skin 33 (with back foam): Used to cover the surface of EPP material body to improve the appearance. The back of the skin can be covered with PU back foam of different thicknesses such as 1mm, 2mm, 3mm, 4mm, 5mm, etc. The skin is attached to the surface of EPP material with glue. It can be achieved by manual wrapping, hot pressing, etc. The glue can be hot melt glue, water-based glue or solvent glue.

[0102] The Doghouse snap-fit ​​base insert consists of two parts: a snap-fit ​​insert assembly area and a snap-fit ​​insert pre-embedded area (i.e., pre-embedded part 21). These two parts are integrally molded using an injection molding process. The snap-fit ​​insert assembly area forms the mounting cavity 217, with a portion of the connecting part 22 located within the mounting cavity 217. The connecting part 22 is a snap-fit ​​and connects to the pre-embedded part 21 through the mounting cavity 217. The insert is generally made of PP-based material, including PP+EPDM-T10 / 20, PP+LGF10 / 15 / 20, PP+GF10 / 15 / 20, etc. PP materials and EPP both belong to polyolefin materials, maintaining good interfacial compatibility and adhesion. During the EPP insert molding process, the insert is pre-embedded into the EPP molding die and molded together.

[0103] The snap-fit ​​insert assembly area needs to be embedded in the EPP mold steel to prevent EPP material from intruding into the snap-fit ​​assembly area of ​​the insert, thus avoiding affecting the snap-fit ​​assembly. To ensure better filling of the entire snap-fit ​​chamber by the EPP material during filling, openings are provided on the sides and bottom to form filling ports 212, allowing the EPP filling path to form a continuous closed loop. During EPP mold forming, the EPP material filling path can fill the insert structure's chamber from both sides with the filling steam.

[0104] The overall structural depth of the trim connection structure (buckle seat insert) is j (j = g + h). The depth of insert 2 embedded in the EPP material is g, and the depth of the non-embedded insert assembly area is h. The embedding depth typically needs to exceed 2 / 3 of the overall depth to ensure the overall clamping force of the insert within the EPP material, preventing detachment or damage at the interface between the insert and EPP during disassembly of the entire door trim assembly. The minimum distance between the embedded structure (i.e., embedded part 21) and the surface of the EPP material is i, ensuring complete filling during EPP molding and preventing material shortages. A flange face is provided at the root of the buckle seat insert. The flange face is circular, with a radius of k. A larger k value results in a larger interface area between the insert and the EPP material, leading to a stronger connection and better resistance to pull-out forces in the buckle assembly / disassembly direction. The maximum thickness of the EPP material in the embedded area can generally be maximized, represented by (g + i) in this insert structure. During EPP molding, the EPP material can fill the cavity of the insert structure from both sides with the filling steam.

[0105] Multiple snap-fit ​​insert structures need to be installed throughout the entire door panel installation area. Each insert structure is arranged at a certain interval. In order to meet the requirements of error prevention in production and reduce the cost of injection molded inserts, multiple snap-fit ​​insert structures are made to be shared.

[0106] like Figure 5 As shown, g is the pre-embedded depth of the insert structure in the EPP material, and it is recommended that g ≥ 2 / 3j; h is the height of the assembly area of ​​the insert structure (non-embedded area), which meets the assembly requirements of the snap fastener; i is the minimum distance between the pre-embedded insert structure and the EPP profile, preferably ≥ 8mm; j is the overall height of the insert structure, preferably j = g + h; k is the flange radius (circular) of the snap fastener insert, preferably k ≥ 18mm; l is the maximum structural thickness of the EPP material in the pre-embedded area of ​​the insert, preferably 35-50mm.

[0107] In an optional embodiment, the molding method of the trim connection structure mainly includes molding the trim body and the injection-molded insert 2, specifically including the following steps:

[0108] S1, The plastic insert 2 is prepared in advance by injection molding process and is ready for use;

[0109] S2, before the main body of the ornament is formed, the plastic insert 2 is pre-embedded in the EPP molding mold, and then the EPP material is filled and melted by steam heating to form the mold. Finally, the EPP material and the PP injection molded insert are completely bonded together. Then, it is left to cure for at least 12 hours.

[0110] S3, the EPP material body (integrated plastic insert) after conditioning is covered with skin and wrapped with the edges to hide the skin. This can be achieved by manual covering, hot pressing and bonding.

[0111] S4, the encapsulated EPP segmented parts are welded together with the surrounding parts to form a complete trim connection assembly.

[0112] According to one aspect of the present invention, a car door is provided, the car door including a trim connection structure, the trim connection structure being the trim connection structure described above.

[0113] According to one aspect of the present invention, a vehicle is provided, the vehicle including a trim connection structure or a door, wherein the trim connection structure is the aforementioned trim connection structure, and the door is the aforementioned door.

[0114] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0115] By combining a special insert structure design with the trim body (made of EPP material), the problem of the excessive thickness of EPP structural material and the low strength of foamed material, which prevent the formation of a connection structure with sufficient strength and fine structure, is solved. The corresponding connection structure is formed through the insert structure, which is pre-placed into the EPP molding mold for integral molding during EPP molding. The connection between the insert and the surrounding parts (sheet metal) is achieved through hard-point connection, ensuring that relevant product strength and durability requirements are met.

[0116] This invention provides a connection scheme based on expanded polystyrene (EPP) as the main material of the trim and combined with the insert structure. It can make up for the problem that EPP material itself has insufficient structural strength and cannot be used for hard point connection. This scheme can effectively solve the problem that expanded polystyrene cannot be used for hard point connection and greatly expand the application field of expanded polystyrene in complex interior and exterior trim structures.

[0117] This invention solves the problems of weak inherent strength and inability to form fine connection structures in EPP material by combining a special insert structure with the trim body (EPP structure). This expands the application of EPP material to more complex interior and exterior trim components. The special insert structure designed in this invention exhibits excellent compatibility and interface connection strength with the EPP material. Compared to inserts connected by adhesive backing, its installation strength, reliability, and product precision are significantly improved. This special insert design allows EPP material to be applied to complex interior trim components. By replacing current injection molding materials with EPP, and through changes in mold processes, the cost of molds and tooling can be significantly reduced, thereby enhancing the competitiveness of vehicle models.

[0118] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0119] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0120] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0121] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A decorative element connection structure, characterized in that, include: The decorative body (1) is made of foam material; An insert (2) having a pre-embedded part (21) and a connecting part (22), wherein at least a portion of the pre-embedded part (21) is embedded in the body of the ornament (1), and the connecting part (22) is located on one side of the surface of the body of the ornament (1). The connecting part (22) is connected to the pre-embedded part (21), and the connecting part (22) is used to connect the target part (3) to be assembled. A sealing plate (23) is provided between the connecting part (22) and the pre-embedded part (21). The surface of the sealing plate (23) near the connecting part (22) is flush with the surface of the ornament body (1) near the connecting part (22), or the surface of the sealing plate (23) near the connecting part (22) is closer to the connecting part (22) than the surface of the ornament body (1) near the connecting part (22).

2. The decorative component connection structure according to claim 1, characterized in that, The distance between the surface of the sealing plate (23) near the connecting part (22) and the end of the connecting part (22) away from the ornament body (1) is less than the distance between the surface of the ornament body (1) near the connecting part (22) and the end of the connecting part (22) away from the ornament body (1) which is 0-2mm.

3. The decorative component connection structure according to claim 1, characterized in that, The pre-embedded part (21) has a foam material filling cavity (211) inside. The foam material filling cavity (211) has a filling port (212). The foam material flows into the foam material filling cavity (211) through the filling port (212) so that the insert (2) is connected to the ornament body (1).

4. The decorative component connection structure according to claim 3, characterized in that, There are multiple filling ports (212), and the multiple filling ports (212) are arranged in different directions.

5. The decorative component connection structure according to claim 4, characterized in that, The orientations of at least two of the filling ports (212) are perpendicular to each other.

6. The decorative component connection structure according to claim 3, characterized in that, The pre-embedded part (21) has reinforcing ribs (213), at least a portion of which are located within the foam material filling cavity (211), and which divide the foam material filling cavity (211) into at least two sub-cavities.

7. The decorative component connection structure according to claim 6, characterized in that, The reinforcing ribs include: The first reinforcing rib (2131) extends along a first direction and divides the foam material filling cavity (211) into at least two first cavities along a second direction; The second reinforcing rib (2132) is connected to the first reinforcing rib (2131). The second reinforcing rib (2132) extends along the second direction. The first reinforcing rib (2131) divides the foam material filling cavity (211) into at least two second cavities (215) along the first direction. Each second cavity (215) has the filling port (212) at its end.

8. The decorative element connection structure according to any one of claims 1 to 7, characterized in that, The pre-embedded part (21) and the connecting part (22) are integrally formed, and the connecting part (22) is a snap-fit ​​groove (221).

9. The decorative component connection structure according to claim 8, characterized in that, The snap-fit ​​slot (221) includes a first snap-fit ​​block (2211) and a second snap-fit ​​block (2212), both of which are connected to the sealing plate (23).

10. The decorative element connection structure according to claim 8, characterized in that, The pre-embedded part (21) includes a filling cavity wall (214), which is connected to the sealing plate (23) to form a foam material filling cavity (211). The foam material filling cavity (211) has a filling port (212), which includes a first filling port (2121) and a second filling port (2122). The orientation of the first filling port (2121) is perpendicular to the installation direction of the snap-fit ​​groove (221), and the orientation of the second filling port (2122) is perpendicular to the installation direction of the snap-fit ​​groove (221).

11. The decorative element connection structure according to any one of claims 1 to 7, characterized in that, The pre-embedded part (21) and the connecting part (22) are separately provided. A portion of the pre-embedded part (21) has an installation cavity (217) at its end. The installation cavity (217) protrudes from the body of the ornament (1). The protruding portion of the pre-embedded part (21) has an installation cavity (217). A portion of the connecting part (22) is located in the installation cavity (217). The connecting part (22) is a snap fastener (222). The connecting part (22) is connected to the pre-embedded part (21) through the installation cavity (217).

12. The decorative element connection structure according to claim 11, characterized in that, The mounting cavity (217) includes a mounting cavity wall (2171), which is connected to the sealing plate (23).

13. The decorative element connection structure according to claim 11, characterized in that, The pre-embedded part (21) includes a filling cavity wall (214), which is connected to the sealing plate (23) to form a foam material filling cavity (211). The foam material filling cavity (211) has a filling port (212), which includes a third filling port (2123) and a fourth filling port (2124). The orientation of the third filling port (2123) is parallel to the installation direction of the buckle (222), and the orientation of the fourth filling port (2124) is perpendicular to the installation direction of the buckle (222).

14. The decorative element connection structure according to claim 11, characterized in that, The pre-embedded part (21) is provided with a flange face (216) at one end away from the connecting part (22), and the maximum outer diameter of the flange face (216) is greater than the maximum outer diameter of the rest of the pre-embedded part (21).

15. The decorative element connection structure according to any one of claims 1 to 7, characterized in that, The insert (2) is made of polyolefin material.

16. The decorative element connection structure according to any one of claims 1 to 7, characterized in that, The height of the insert (2) is J, and the depth of the embedded part (21) embedded in the body of the ornament (1) is H, wherein H≥2 / 3*J.

17. The decorative element connection structure according to any one of claims 1 to 7, characterized in that, The distance between the bottom surface of the embedded part (21) embedded in the ornament body (1) and the surface of the ornament body (1) away from the insert (2) is I, where I ≥ 8 mm.

18. A vehicle door, the vehicle door including a trim connection structure, characterized in that, The decorative component connection structure is the decorative component connection structure as described in any one of claims 1 to 17.

19. A vehicle, characterized in that, The vehicle includes a trim connection structure or a door, wherein the trim connection structure is the trim connection structure according to any one of claims 1 to 17, and the door is the door according to claim 18.

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